Ok there is some info on this website regarding what u can bring into australia. We have to declare all food items which may be confiscated. Thus, for smooth custom clearance, best not to bring an food.

here's the website:
http://www.daffa.gov.au/aqis/travel/entering-australia/cant-take

Declare or beware!
You must declare for inspection all food, plant material and animal products on arrival in Australia to ensure they are free of pests and diseases.
Some products may require treatment to make them safe. Other items that pose pest and disease risks will be seized and destroyed by AQIS. You can dispose of high-risk items in quarantine bins in the airport terminal.
If you’re not sure, ask an AQIS officer.

The list of items can be found in the website

Before you land in Australia
You will be given an Incoming Passenger Card before you land in Australia. This is a legal document. You must tick YES to declare if you are carrying any food, plant material or animal products. If you have items you don’t wish to declare, you can dispose of them in quarantine bins in the airport terminal.
On arrival your baggage may be X-Rayed, inspected or checked by a detector dog team. If you fail to declare or dispose of any quarantine items, or make a false declaration:
you will be caught
you could receive an on-the-spot fine of up to $AUD220, or
you could be prosecuted and face a fine of up to $AUD66,000 or 10 years imprisonment which may result in a criminal record.
You will not be penalised if goods are declared.